http://www.rootschat.com/links/019hi/ Here is a reference to Magnus who married "Mrs Florence Stewart"
Homesteads were not "Land Grants" as such - you didn't just get handed the land, you paid $10 for the patent and then had to develop it (often there was literally nothing there, so this included building your own house, breaking land, planting land, fencing it off, etc.) You also had to live there for three years (at least six months of the year), to "prove up" your claim, or it would be considered abandoned and someone else could claim it.
http://www.saskarchives.com/collections/land-records/history-and-background-administration-land-saskatchewan/homesteadingA large percent of homesteaders failed to make a go of it. Young single men, without a family to support them, without savings to help them to the rough patches, and possibly without much farming experience often struggled. Those who came as an extended family group or as part of a wider immigrant community fared better.
Saskatchewan Provincial Records, on familysearch, has some digitised homestead records (currently for around 1908-1911). The actual applications for patent are the most interesting - list what improvements they've made (size of house, what it is made of, what crops they had, what animals, etc) when they were resident there (exact dates), who else was living there with them.
You can use this database to find a file number:
http://www.saskhomesteads.comInterestingly - the same file number/location (locations matches the one you mentioned) is given for two men:
851619
Searle, Lewis
Stewart, David
You sometimes see cases where application was made for on someone's behalf, so that could be what happened here.